For those of you who werent with us all these glorious years watching smallville, Lionel is's father . Smallville's 10th episode on the 10th season unleash's a different Lionel, a darker one. if you are familiar with Justice league unlimited there is a parallel universe where a dark Superman is a murderer. Well this Smallville episode would explain how that Justice Lord came to be. Lionel adopted Clark and turned him very bad.
And in the last part of this episode that bad Luthor, i say the "Bad Luthor" because we all know the Lionel in this universe became good in the last years of his life. Now this Dark Lionel must have been sucked into this universe while the Good Clark switched from alternate universe and now is here, must have found the Clone Lex and made him into the the ultimate nemesis of the man of steel.
The best part of this episode is what Dark Lionel said, that he wouldnt miss this part, and see how it turns out.
That could mean how this last season connects all the dots that makes the Superman and Lex Luthor what they are today.
Watch all 10 seasons its a hell of a ride!